stm32mp157a-dk1 编译 Ubuntu 20.04固件

文章目录

前言
流程
开机
探索
dmesg
参考

前言

前几篇用Buidroot搞的都是近乎纯净版的系统, 开机极快(~5s), 根文件系统占用极小(<10M), 纯净就意味着功能少, 很多东西没有, 要用的时候还要回去勾选.
那有没有把常用的系统组件都打包好, 开箱即用的固件, 也是有的, 常见的有Debian/Ubuntu/Arch Linux等的固件, 开机后用户可以直接设置联网, SSH, apt安装应用等. 本篇就继续抄作业走下 stm32mp157a-dk1 编译 Ubuntu 20.04 固件的流程.

流程

大概是把Buildroot的流程拆开做了, 要经历:

交叉编译器下载, 因为要在PC上编译ARM平台的固件
U-Boot 下载与编译, U-Boot作为引导程序, 支持的芯片平台特别多, 这里把 stm32mp157a-dk1 板子的编译出来就可以
Linux Kernel, 这个基本是主线内核, 下面指定编译出支持ARMV7平台的, 长期支持的5.10.x内核
Ubuntu 20.04的根文件系统, 或者这一步也可以选Debian, 或者Arch Linux等, 里面把apt等常用的组件都打包好了, 开箱即用, 缺点自然是要占数百兆(~900MB)存储空间, 开机后内存占用也几乎50MB以上, 如果芯片只有64MB内存, 还是要小心一点, 所幸stm32mp157a-dk1板载有512MB DDR3, TF卡手头刚好有128GB的TF卡, 问题都不大
接着给空白的TF卡分区, 大致4个区, 放入两段引导, U-Boot, 然后是根文件系统, 内核, 配置好extlinux.conf, 告诉引导程序内核放在哪, 设备树放在哪, 调试口是哪个等
最后把TF卡插板子上, 接上调试串口, 上电就可以了

参考脚本

#!/bin/bash# 交叉编译器 gcc
wget -c https://releases.linaro.org/components/toolchain/binaries/6.5-2018.12/arm-linux-gnueabihf/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf.tar.xz
tar xf gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf.tar.xz
export CC=`pwd`/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
${CC}gcc --version# U-Boot
git clone -b v2021.10 https://github.com/u-boot/u-boot --depth=1
cd u-boot/
# stm32mp157a-dk1
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} stm32mp15_basic_defconfig
make ARCH=arm CROSS_COMPILE=${CC} DEVICE_TREE=stm32mp157a-dk1 all -j $(nproc)
cd ..# Linux Kernel
git clone https://github.com/RobertCNelson/armv7-lpae-multiplatform
cd armv7-lpae-multiplatform/
git checkout origin/v5.10.x -b tmp  # v5.10.x
sudo apt-get update
sudo apt-get install -y lzop lzma libmpc-dev u-boot-tools libncurses5-dev:amd64
./build_kernel.sh   # 这一步花了2个多小时
# 执行完后打印
# eewiki.net: [user@localhost:~$ export kernel_version=5.10.83-armv7-lpae-x58]
# 下面一行根据上面输出更改
export kernel_version=5.10.83-armv7-lpae-x58    # from build.sh
cd ..# Ubuntu 20.04 LTS
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/ubuntu-20.04.3-minimal-armhf-2021-12-20.tar.xz
tar xf ubuntu-20.04.3-minimal-armhf-2021-12-20.tar.xz# Setup microSD card
# 准备一张空的TF卡, 我这个是128GB的, 插上后识别为/dev/sdb
# 自己根据情况做调整, 下面写为sdX, 有的是mmcbxxx之类的, 参考链接
# 小心!!!
# 注意!!!
# 注意!!!
# lsblk
export DISK=/dev/sdX
sudo dd if=/dev/zero of=${DISK} bs=1M count=10    # Erase partition table/labels on microSD card
sudo sgdisk -o ${DISK}
sudo sgdisk --resize-table=128 -a 1 \-n 1:34:545    -c 1:fsbl1   \-n 2:546:1057  -c 2:fsbl2   \-n 3:1058:5153 -c 3:ssbl    \-n 4:5154:     -c 4:rootfs  \-p ${DISK}
sudo sgdisk -A 4:set:2 ${DISK}
# for: DISK=/dev/sdX
sudo dd if=./u-boot/u-boot-spl.stm32 of=${DISK}1
sudo dd if=./u-boot/u-boot-spl.stm32 of=${DISK}2
sudo dd if=./u-boot/u-boot.img of=${DISK}3
# for: DISK=/dev/sdX
sudo mkfs.ext4 -L rootfs ${DISK}4 # if need input y, there exist some error
sudo mkdir -p /media/rootfs/
# for: DISK=/dev/sdX
sudo mount ${DISK}4 /media/rootfs/# Copy Root File System
sudo tar xfvp ./ubuntu-*-*-armhf-*/armhf-rootfs-*.tar -C /media/rootfs/
sync# Setup extlinux.conf
sudo mkdir -p /media/rootfs/boot/extlinux/
sudo sh -c "echo 'label Linux ${kernel_version}' > /media/rootfs/boot/extlinux/extlinux.conf"
sudo sh -c "echo '    kernel /boot/vmlinuz-${kernel_version}' >> /media/rootfs/boot/extlinux/extlinux.conf"
sudo sh -c "echo '    append console=ttySTM0,115200 root=/dev/mmcblk0p4 ro rootfstype=ext4 rootwait quiet' >> /media/rootfs/boot/extlinux/extlinux.conf"
sudo sh -c "echo '    fdtdir /boot/dtbs/${kernel_version}/' >> /media/rootfs/boot/extlinux/extlinux.conf"# Copy Kernel Image
sudo cp -v ./armv7-lpae-multiplatform/deploy/${kernel_version}.zImage /media/rootfs/boot/vmlinuz-${kernel_version}# Copy Kernel Device Tree Binaries
sudo mkdir -p /media/rootfs/boot/dtbs/${kernel_version}/
sudo tar xfv ./armv7-lpae-multiplatform/deploy/${kernel_version}-dtbs.tar.gz -C /media/rootfs/boot/dtbs/${kernel_version}/# Copy Kernel Modules
sudo tar xfv ./armv7-lpae-multiplatform/deploy/${kernel_version}-modules.tar.gz -C /media/rootfs/# File Systems Table (/etc/fstab)
sudo sh -c "echo '/dev/mmcblk0p4  /  auto  errors=remount-ro  0  1' >> /media/rootfs/etc/fstab"# WiFi dk1没有贴片, 就不设置了sync
sudo umount /media/rootfs

TF卡的分区信息这里贴一下供参考


$ lsblk
sdb      8:16   1  119.4G  0 disk
├─sdb1   8:17   1    256K  0 part /media/z/FC78-3853
├─sdb2   8:18   1    256K  0 part /media/z/9A70-8A9C
├─sdb3   8:19   1      2M  0 part
└─sdb4   8:20   1  119.4G  0 part $ cat /media/rootfs/boot/extlinux/extlinux.conf
label Linux 5.10.83-armv7-lpae-x58kernel /boot/vmlinuz-5.10.83-armv7-lpae-x58append console=ttySTM0,115200 root=/dev/mmcblk0p4 ro rootfstype=ext4 rootwait quietfdtdir /boot/dtbs/5.10.83-armv7-lpae-x58/

如果想创建 sdcard.img 文件, Create a generic sdcard.img file - eewiki / Linux Guides - Engineering and Component Solution Forum - TechForum │ Digi-Key (digikey.com)

开机

接上板子的ST-LINK USB, 打开串口终端, 115200-8-N-1, 上电, 一开始反应比较慢, 多等等, 很多东西没打印出来, 开机到登录约20s, 默认HDMI有文字界面显示, 无图形界面显示

U-Boot SPL 2021.10 (Jan 13 2022 - 21:13:38 -0800)
RAM: DDR3-DDR3L 16bits 533000kHz
WDT:   Started with servicing (32s timeout)U-Boot 2021.10 (Jan 13 2022 - 21:13:38 -0800)CPU: STM32MP157AAC Rev.B
Model: STMicroelectronics STM32MP157A-DK1 Discovery Board
Board: stm32mp1 in basic mode (st,stm32mp157a-dk1)
Board: MB1272 Var1.0 Rev.C-01
DRAM:  512 MiB
Clocks:
- MPU : 650 MHz
- MCU : 208.878 MHz
- AXI : 266.500 MHz
- PER : 24 MHz
- DDR : 533 MHz
WDT:   Started with servicing (32s timeout)
NAND:  0 MiB
MMC:   STM32 SD/MMC: 0
Loading Environment from MMC... *** Warning - bad CRC, using default environmentIn:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet@5800a000
Hit any key to stop autoboot:  0
Boot over mmc0!
Saving Environment to MMC... Writing to redundant MMC(0)... OK
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:4...
Found /boot/extlinux/extlinux.conf
Retrieving file: /boot/extlinux/extlinux.conf
217 bytes read in 82 ms (2 KiB/s)
1:      Linux 5.10.83-armv7-lpae-x58
Retrieving file: /boot/vmlinuz-5.10.83-armv7-lpae-x58
11629056 bytes read in 570 ms (19.5 MiB/s)
append: console=ttySTM0,115200 root=/dev/mmcblk0p4 ro rootfstype=ext4 rootwait quiet
Retrieving file: /boot/dtbs/5.10.83-armv7-lpae-x58/stm32mp157a-dk1.dtb
82714 bytes read in 91 ms (886.7 KiB/s)
Kernel image @ 0xc2000000 [ 0x000000 - 0xb17200 ]
## Flattened Device Tree blob at c4000000Booting using the fdt blob at 0xc4000000Loading Device Tree to cffe8000, end cffff319 ... OKStarting kernel ...[    2.064002] stm32-pwr-regulator 50001000.pwr: Failed to register regulator: -517Ubuntu 20.04 LTS arm ttySTM0# 这里提示了用户名和密码
default username:password is [ubuntu:temppwd]arm login:

板子蓝灯闪烁…

# ubuntu temppwd
arm login: ubuntu
Password: The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.ubuntu@arm:~$

dmesg贴在本篇最后.

探索

插上网线

ubuntu@arm:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04 LTS
Release:        20.04
Codename:       focalubuntu@arm:~$ uname -r
5.10.83-armv7-lpae-x58ubuntu@arm:~$ uname -a
Linux arm 5.10.83-armv7-lpae-x58 #1 SMP PREEMPT Fri Jan 14 00:01:29 PST 2022 armv7l armv7l armv7l GNU/Linuxubuntu@arm:~$ cat /proc/cpuinfo
processor       : 0
model name      : ARMv7 Processor rev 5 (v7l)
BogoMIPS        : 48.00
Features        : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xc07
CPU revision    : 5processor       : 1
model name      : ARMv7 Processor rev 5 (v7l)
BogoMIPS        : 48.00
Features        : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xc07
CPU revision    : 5Hardware        : STM32 (Device Tree Support)
Revision        : 0000
Serial          : 003E003D3338510739303435ubuntu@arm:~$ cat /proc/meminfo
MemTotal:         428036 kB
MemFree:          294768 kB
MemAvailable:     362760 kB
Buffers:            8088 kB
Cached:            57020 kB
SwapCached:            0 kB
Active:            28420 kB
Inactive:          60928 kB
Active(anon):        304 kB
Inactive(anon):    24672 kB
Active(file):      28116 kB
Inactive(file):    36256 kB
Unevictable:           0 kB
Mlocked:               0 kB
HighTotal:             0 kB
HighFree:              0 kB
LowTotal:         428036 kB
LowFree:          294768 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:                56 kB
Writeback:             0 kB
AnonPages:         24220 kB
Mapped:            30272 kB
Shmem:               736 kB
KReclaimable:      14564 kB
Slab:              31164 kB
SReclaimable:      14564 kB
SUnreclaim:        16600 kB
KernelStack:        1000 kB
PageTables:         1316 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:      214016 kB
Committed_AS:     185560 kB
VmallocTotal:     507904 kB
VmallocUsed:        3108 kB
VmallocChunk:          0 kB
Percpu:              576 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
FileHugePages:         0 kB
FilePmdMapped:         0 kB
CmaTotal:          65536 kB
CmaFree:           60676 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:               0 kBubuntu@arm:~$ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
mmcblk0     179:0    0 119.4G  0 disk
├─mmcblk0p1 179:1    0   256K  0 part
├─mmcblk0p2 179:2    0   256K  0 part
├─mmcblk0p3 179:3    0     2M  0 part
└─mmcblk0p4 179:4    0 119.4G  0 part /# 用了1.1G
ubuntu@arm:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root       117G  1.1G  110G   1% /
devtmpfs        176M     0  176M   0% /dev
tmpfs           209M     0  209M   0% /dev/shm
tmpfs            42M  732K   42M   2% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           209M     0  209M   0% /sys/fs/cgroup
tmpfs            42M     0   42M   0% /run/user/1000# 内存用了53.4MB
ubuntu@arm:~$ freetotal        used        free      shared  buff/cache   available
Mem:         428036       53400      294512         736       80124      362948
Swap:             0           0           0ubuntu@arm:~$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000link/ether 00:80:e1:42:73:5f brd ff:ff:ff:ff:ff:ff# 默认几乎算没有图形界面, 比PC还是少了不少服务
ubuntu@arm:~$ systemd-analyze critical-chain
The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.graphical.target @13.595s
└─multi-user.target @13.593s└─getty.target @13.591s└─serial-getty@ttySTM0.service @13.577s└─dev-ttySTM0.device @13.533subuntu@arm:~$ python
-bash: python: command not found
ubuntu@arm:~$ python3
Python 3.8.2 (default, Mar 13 2020, 10:14:16)
[GCC 9.2.1 20200306] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> # 插键盘鼠标, USB Hub芯片没反应, 不能用
# 板载的USB2514没有工作
ubuntu@arm:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hububuntu@arm:~$ sudo su
root@arm:/home/ubuntu# i2cdetect -y -r 10  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- 28 -- -- -- -- -- -- --
30: -- -- -- UU -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --  ubuntu@arm:~$ dmesg | grep usb
[    0.200169] usbcore: registered new interface driver usbfs
[    0.200266] usbcore: registered new interface driver hub
[    0.200352] usbcore: registered new device driver usb
[    2.150369] usbcore: registered new interface driver uas
[    2.150508] usbcore: registered new interface driver usb-storage
[    2.150571] usbcore: registered new interface driver ums-alauda
[    2.150632] usbcore: registered new interface driver ums-cypress
[    2.150692] usbcore: registered new interface driver ums-datafab
[    2.150751] usbcore: registered new interface driver ums_eneub6250
[    2.150811] usbcore: registered new interface driver ums-freecom
[    2.150870] usbcore: registered new interface driver ums-isd200
[    2.150930] usbcore: registered new interface driver ums-jumpshot
[    2.150990] usbcore: registered new interface driver ums-karma
[    2.151050] usbcore: registered new interface driver ums-onetouch
[    2.151148] usbcore: registered new interface driver ums-realtek
[    2.151212] usbcore: registered new interface driver ums-sddr09
[    2.151272] usbcore: registered new interface driver ums-sddr55
[    2.151332] usbcore: registered new interface driver ums-usbat
[    2.251648] vdd_usb: supplied by vin
[    2.288254] usbcore: registered new interface driver usbhid
[    2.288269] usbhid: USB HID core driver
[    2.365610] phy phy-5a006000.usbphyc.0: supply vdda1v1 not found, using dummy regulator
[    2.365921] phy phy-5a006000.usbphyc.0: supply vdda1v8 not found, using dummy regulator
[    2.366600] phy phy-5a006000.usbphyc.1: supply vdda1v1 not found, using dummy regulator
[    2.366920] phy phy-5a006000.usbphyc.1: supply vdda1v8 not found, using dummy regulator
[    2.367046] stm32-usbphyc 5a006000.usbphyc: registered rev:1.0
[    2.370137] usb33: supplied by vdd_usb
[    2.408458] ehci-platform 5800d000.usb: EHCI Host Controller
[    2.408627] ehci-platform 5800d000.usb: new USB bus registered, assigned bus number 1
[    2.410489] ehci-platform 5800d000.usb: irq 60, io mem 0x5800d000
[    2.426076] ehci-platform 5800d000.usb: USB 2.0 started, EHCI 1.00
[    2.426714] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[    2.426735] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.426749] usb usb1: Product: EHCI Host Controller
[    2.426763] usb usb1: Manufacturer: Linux 5.10.83-armv7-lpae-x58 ehci_hcd
[    2.426776] usb usb1: SerialNumber: 5800d000.usb
[   22.046898] dwc2 49000000.usb-otg: supply vusb_d not found, using dummy regulator
[   22.047379] dwc2 49000000.usb-otg: supply vusb_a not found, using dummy regulator
[   22.167054] dwc2 49000000.usb-otg: dwc2_core_reset: HANG! Soft Reset timeout GRSTCTL_CSFTRST
[   22.182847] dwc2: probe of 49000000.usb-otg failed with error -16

网络设置

# iproute2套件
# 内置了netplan
# /etc/netplan/*.yaml# 临时IP设置
sudo ip address add 192.168.6.100/24 dev eth0
sudo ifconfig eth0 up
sudo ip route add default via 192.168.6.1
sudo sh -c 'echo "DNS=114.114.114.114 8.8.8.8" >> /etc/systemd/resolved.conf'# 然后主机就可以ping通st了
# 主机共享网络给st
ubuntu@arm:~$ ping www.baidu.com
PING www.wshifen.com (x.x.x.x) 56(84) bytes of data.
64 bytes from x.x.x.x (x.x.x.x): icmp_seq=1 ttl=39 time=199 ms
64 bytes from x.x.x.x (x.x.x.x): icmp_seq=2 ttl=39 time=408 ms
64 bytes from x.x.x.x (x.x.x.x): icmp_seq=3 ttl=39 time=202 ms
64 bytes from x.x.x.x (x.x.x.x): icmp_seq=4 ttl=39 time=198 ms
64 bytes from x.x.x.x (x.x.x.x): icmp_seq=5 ttl=39 time=197 ms# 默认开启的有ssh, 直接远程登录
$ ssh ubuntu@192.168.6.100
ubuntu@192.168.6.100's password:
Last login: Fri Jan 14 09:58:45 2022 from 192.168.6.1
ubuntu@arm:~$ uname -r
5.10.83-armv7-lpae-x58
# 串口终端ping的慢, 约200ms
# 千兆网ssh上去ping的快, 4.xmssudo apt update
sudo apt install -y screenfetch
screenfetch

出现

让屏幕输出杂色

cat /dev/urandom >/dev/fb0

dmesg

开机没打出来, 这里贴出dmesg信息

$ dmesg
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.10.83-armv7-lpae-x58 (z@ubuntu) (arm-linux-gnueabi-gcc (GCC) 10.3.0, GNU ld (GNU Binutils) 2.36.1) #1 SMP PREEMPT Fri Jan 14 00:01:29 PST 2022
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=30c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: STMicroelectronics STM32MP157A-DK1 Discovery Board
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] efi: UEFI not found.
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000010000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node mcuram2@10000000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000010040000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0vring0@10040000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000010041000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0vring1@10041000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000010042000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0buffer@10042000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000030000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node mcuram@30000000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000038000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node retram@38000000, compatible id shared-dma-pool
[    0.000000] cma: Reserved 64 MiB at 0x00000000dc000000
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x00000000c0000000-0x00000000dfffffff]
[    0.000000]   Normal   empty
[    0.000000]   HighMem  empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00000000c0000000-0x00000000d3ffffff]
[    0.000000]   node   0: [mem 0x00000000d4000000-0x00000000d7ffffff]
[    0.000000]   node   0: [mem 0x00000000d8000000-0x00000000dfffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000c0000000-0x00000000dfffffff]
[    0.000000] On node 0 totalpages: 131072
[    0.000000]   DMA zone: 1152 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 131072 pages, LIFO batch:31
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.0 detected in firmware.
[    0.000000] psci: Using standard PSCI v0.2 function IDs
[    0.000000] psci: Trusted OS migration not required
[    0.000000] psci: SMC Calling Convention v1.0
[    0.000000] percpu: Embedded 21 pages/cpu s54604 r8192 d23220 u86016
[    0.000000] pcpu-alloc: s54604 r8192 d23220 u86016 alloc=21*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 129920
[    0.000000] Kernel command line: console=ttySTM0,115200 root=/dev/mmcblk0p4 ro rootfstype=ext4 rootwait quiet
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 360452K/524288K available (16384K kernel code, 2138K rwdata, 4348K rodata, 2048K init, 400K bss, 98300K reserved, 65536K cma-reserved, 0K highmem)
[    0.000000] random: get_random_u32 called from __kmem_cache_create+0x30/0x450 with crng_init=0
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] ftrace: allocating 51400 entries in 151 pages
[    0.000000] ftrace: allocated 151 pages with 5 groups
[    0.000000] rcu: Preemptible hierarchical RCU implementation.
[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[    0.000000]  Trampoline variant of Tasks RCU enabled.
[    0.000000]  Rude variant of Tasks RCU enabled.
[    0.000000]  Tracing variant of Tasks RCU enabled.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (virt).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[    0.000009] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000026] Switching to timer-based delay loop, resolution 41ns
[    0.008200] Console: colour dummy device 80x30
[    0.008283] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=96000)
[    0.008314] pid_max: default: 32768 minimum: 301
[    0.008692] LSM: Security Framework initializing
[    0.008789] Yama: becoming mindful.
[    0.008997] AppArmor: AppArmor initialized
[    0.009017] TOMOYO Linux initialized
[    0.009148] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.009171] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.010900] CPU: Testing write buffer coherency: ok
[    0.011435] CPU0: update cpu_capacity 1024
[    0.011454] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.013429] Setting up static identity map for 0xc0200000 - 0xc0200060
[    0.013749] rcu: Hierarchical SRCU implementation.
[    0.016566] EFI services will not be available.
[    0.017074] smp: Bringing up secondary CPUs ...
[    0.018378] CPU1: update cpu_capacity 1024
[    0.018391] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.018708] smp: Brought up 1 node, 2 CPUs
[    0.018731] SMP: Total of 2 processors activated (96.00 BogoMIPS).
[    0.018742] CPU: All CPU(s) started in SVC mode.
[    0.019969] devtmpfs: initialized
[    0.054482] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.055092] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.055127] futex hash table entries: 512 (order: 3, 32768 bytes, linear)
[    0.059965] pinctrl core: initialized pinctrl subsystem
[    0.062134] NET: Registered protocol family 16
[    0.067360] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.068606] audit: initializing netlink subsys (disabled)
[    0.069132] audit: type=2000 audit(0.060:1): state=initialized audit_enabled=0 res=1
[    0.072162] thermal_sys: Registered thermal governor 'fair_share'
[    0.072181] thermal_sys: Registered thermal governor 'bang_bang'
[    0.072194] thermal_sys: Registered thermal governor 'step_wise'
[    0.072684] cpuidle: using governor menu
[    0.073529] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.073546] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.126666] /soc/interrupt-controller@5000d000: bank0
[    0.126696] /soc/interrupt-controller@5000d000: bank1
[    0.126716] /soc/interrupt-controller@5000d000: bank2
[    0.132303] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOA bank added
[    0.134509] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOB bank added
[    0.136621] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOC bank added
[    0.138720] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOD bank added
[    0.140767] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOE bank added
[    0.142869] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOF bank added
[    0.144894] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOG bank added
[    0.146984] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOH bank added
[    0.149004] stm32mp157-pinctrl soc:pin-controller@50002000: GPIOI bank added
[    0.149398] stm32mp157-pinctrl soc:pin-controller@50002000: Pinctrl STM32 initialized
[    0.153526] stm32mp157-pinctrl soc:pin-controller-z@54004000: GPIOZ bank added
[    0.153570] stm32mp157-pinctrl soc:pin-controller-z@54004000: Pinctrl STM32 initialized
[    0.174955] Kprobes globally optimized
[    0.176261] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[    0.188155] raid6: skip pq benchmark and using algorithm neonx8
[    0.188179] raid6: using neon recovery algorithm
[    0.196003] iommu: Default domain type: Translated
[    0.199851] SCSI subsystem initialized
[    0.200356] libata version 3.00 loaded.
[    0.200874] usbcore: registered new interface driver usbfs
[    0.200971] usbcore: registered new interface driver hub
[    0.201060] usbcore: registered new device driver usb
[    0.202337] mc: Linux media interface: v0.10
[    0.202405] videodev: Linux video capture interface: v2.00
[    0.202602] pps_core: LinuxPPS API ver. 1 registered
[    0.202615] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.202661] PTP clock support registered
[    0.205577] NetLabel: Initializing
[    0.205600] NetLabel:  domain hash size = 128
[    0.205609] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
[    0.205756] NetLabel:  unlabeled traffic allowed by default
[    0.206596] clocksource: Switched to clocksource arch_sys_counter
[    1.783747] VFS: Disk quotas dquot_6.6.0
[    1.783883] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    1.785501] AppArmor: AppArmor Filesystem Enabled
[    1.806794] NET: Registered protocol family 2
[    1.807084] IP idents hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    1.809040] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[    1.809147] TCP established hash table entries: 4096 (order: 2, 16384 bytes, linear)
[    1.809218] TCP bind hash table entries: 4096 (order: 3, 32768 bytes, linear)
[    1.809315] TCP: Hash tables configured (established 4096 bind 4096)
[    1.809518] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[    1.809570] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[    1.810413] NET: Registered protocol family 1
[    1.811898] RPC: Registered named UNIX socket transport module.
[    1.811916] RPC: Registered udp transport module.
[    1.811926] RPC: Registered tcp transport module.
[    1.811936] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    1.811959] NET: Registered protocol family 44
[    1.813773] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 counters available
[    1.817084] Initialise system trusted keyrings
[    1.817576] workingset: timestamp_bits=14 max_order=17 bucket_order=3
[    1.830361] zbud: loaded
[    1.835405] NFS: Registering the id_resolver key type
[    1.835469] Key type id_resolver registered
[    1.835481] Key type id_legacy registered
[    1.835722] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    1.835737] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[    1.836209] fuse: init (API version 7.32)
[    1.986757] xor: measuring software checksum speed
[    1.998661]    arm4regs        :   830 MB/sec
[    2.017611]    8regs           :   519 MB/sec
[    2.034275]    32regs          :   593 MB/sec
[    2.045936]    neon            :   846 MB/sec
[    2.045951] xor: using function: neon (846 MB/sec)
[    2.045974] Key type asymmetric registered
[    2.045987] Asymmetric key parser 'x509' registered
[    2.046115] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 245)
[    2.046454] io scheduler mq-deadline registered
[    2.065739] stm32-pwr-regulator 50001000.pwr: Failed to register regulator: -517
[    2.068242] Serial: 8250/16550 driver, 6 ports, IRQ sharing disabled
[    2.074465] STM32 USART driver initialized
[    2.075576] stm32-usart 40010000.serial: rx dma alloc failed
[    2.075598] stm32-usart 40010000.serial: interrupt mode used for rx (no dma)
[    2.075614] stm32-usart 40010000.serial: tx dma alloc failed
[    2.075627] stm32-usart 40010000.serial: interrupt mode used for tx (no dma)
[    2.075669] 40010000.serial: ttySTM0 at MMIO 0x40010000 (irq = 31, base_baud = 4000000) is a stm32-usart
[    2.082172] printk: console [ttySTM0] enabled
[    2.088302] mmci-pl18x 58005000.mmc: Got CD GPIO
[    2.099041] sdhci: Secure Digital Host Controller Interface driver
[    2.099057] sdhci: Copyright(c) Pierre Ossman
[    2.099448] Synopsys Designware Multimedia Card Interface Driver
[    2.100143] sdhci-pltfm: SDHCI platform and OF driver helper
[    2.108507] random: fast init done
[    2.113011] random: crng init done
[    2.122858] etnaviv etnaviv: bound 59000000.gpu (ops 0xc12e81c4)
[    2.122890] etnaviv-gpu 59000000.gpu: model: GC400, revision: 4652
[    2.123399] etnaviv-gpu 59000000.gpu: Need to move linear window on MC1.0, disabling TS
[    2.124670] [drm] Initialized etnaviv 1.3.0 20151214 for etnaviv on minor 0
[    2.130796] libphy: Fixed MDIO Bus: probed
[    2.135564] stm32-dwmac 5800a000.ethernet: IRQ eth_wake_irq not found
[    2.135588] stm32-dwmac 5800a000.ethernet: IRQ eth_lpi not found
[    2.135868] stm32-dwmac 5800a000.ethernet: PTP uses main clock
[    2.135891] stm32-dwmac 5800a000.ethernet: no reset control found
[    2.138801] stm32-dwmac 5800a000.ethernet: User ID: 0x40, Synopsys ID: 0x42
[    2.138831] stm32-dwmac 5800a000.ethernet:   DWMAC4/5
[    2.138848] stm32-dwmac 5800a000.ethernet: DMA HW capability register supported
[    2.138861] stm32-dwmac 5800a000.ethernet: RX Checksum Offload Engine supported
[    2.138874] stm32-dwmac 5800a000.ethernet: TX Checksum insertion supported
[    2.138887] stm32-dwmac 5800a000.ethernet: Wake-Up On Lan supported
[    2.139050] stm32-dwmac 5800a000.ethernet: TSO supported
[    2.139066] stm32-dwmac 5800a000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[    2.139086] stm32-dwmac 5800a000.ethernet: Enabled Flow TC (entries=2)
[    2.139099] stm32-dwmac 5800a000.ethernet: TSO feature enabled
[    2.139115] stm32-dwmac 5800a000.ethernet: Using 32 bits DMA width
[    2.141304] libphy: stmmac: probed
[    2.150783] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    2.150852] ehci-platform: EHCI generic platform driver
[    2.151537] ehci-mxc: Freescale On-Chip EHCI Host driver
[    2.151698] ehci-omap: OMAP-EHCI Host Controller driver
[    2.154915] usbcore: registered new interface driver uas
[    2.155050] usbcore: registered new interface driver usb-storage
[    2.155114] usbcore: registered new interface driver ums-alauda
[    2.155179] usbcore: registered new interface driver ums-cypress
[    2.155263] usbcore: registered new interface driver ums-datafab
[    2.155324] usbcore: registered new interface driver ums_eneub6250
[    2.155385] usbcore: registered new interface driver ums-freecom
[    2.155445] usbcore: registered new interface driver ums-isd200
[    2.155505] usbcore: registered new interface driver ums-jumpshot
[    2.155565] usbcore: registered new interface driver ums-karma
[    2.155626] usbcore: registered new interface driver ums-onetouch
[    2.155723] usbcore: registered new interface driver ums-realtek
[    2.155786] usbcore: registered new interface driver ums-sddr09
[    2.155848] usbcore: registered new interface driver ums-sddr55
[    2.155909] usbcore: registered new interface driver ums-usbat
[    2.165919] stm32_rtc 5c004000.rtc: registered as rtc0
[    2.166008] stm32_rtc 5c004000.rtc: setting system clock to 2000-01-01T00:43:48 UTC (946687428)
[    2.166483] stm32_rtc 5c004000.rtc: Date/Time must be initialized
[    2.166552] stm32_rtc 5c004000.rtc: registered rev:1.2
[    2.168218] i2c /dev entries driver
[    2.195411] stm32f7-i2c 40012000.i2c: STM32F7 I2C-0 bus adapter
[    2.225581] stpmic1 1-0033: PMIC Chip Version: 0x10
[    2.232220] vddcore: supplied by vin
[    2.235639] vdd_ddr: supplied by vin
[    2.238975] vdd: supplied by vin
[    2.242350] v3v3: supplied by vin
[    2.245441] v1v8_audio: supplied by v3v3
[    2.249552] v3v3_hdmi: supplied by vin
[    2.253414] vtt_ddr: supplied by vdd_ddr
[    2.256838] vdd_usb: supplied by vin
[    2.257661] vdda: supplied by vin
[    2.261226] v1v2_hdmi: supplied by v3v3
[    2.264808] vref_ddr: supplied by vin
[    2.268412] bst_out: supplied by vin
[    2.269412] vbus_otg: supplied by bst_out
[    2.270529] vbus_sw: supplied by bst_out
[    2.274951] stm32f7-i2c 5c002000.i2c: STM32F7 I2C-1 bus adapter
[    2.280486] stm_thermal 50028000.thermal: stm_thermal_probe: Driver initialized successfully
[    2.287293] ledtrig-cpu: registered to indicate activity on CPUs
[    2.290539] stm32-crc32 58009000.crc: Initialized
[    2.293364] hid: raw HID events driver (C) Jiri Kosina
[    2.293870] usbcore: registered new interface driver usbhid
[    2.293884] usbhid: USB HID core driver
[    2.295481] stm32-ipcc 4c001000.mailbox: ipcc rev:1.0 enabled, 6 chans, proc 0
[    2.298020] drop_monitor: Initializing network drop monitor service
[    2.299573] NET: Registered protocol family 10
[    2.306095] Segment Routing with IPv6
[    2.306284] mip6: Mobile IPv6
[    2.306309] NET: Registered protocol family 17
[    2.306951] Key type dns_resolver registered
[    2.306969] mpls_gso: MPLS GSO support
[    2.307277] ThumbEE CPU extension supported.
[    2.307305] Registering SWP/SWPB emulation handler
[    2.307995] registered taskstats version 1
[    2.308021] Loading compiled-in X.509 certificates
[    2.308189] zswap: loaded using pool lzo/zbud
[    2.309280] Key type ._fscrypt registered
[    2.309297] Key type .fscrypt registered
[    2.309309] Key type fscrypt-provisioning registered
[    2.314346] Btrfs loaded, crc32c=crc32c-generic
[    2.314528] AppArmor: AppArmor sha1 policy hashing enabled
[    2.361547] stm32-dma 48000000.dma-controller: STM32 DMA driver registered
[    2.364474] stm32-dma 48001000.dma-controller: STM32 DMA driver registered
[    2.369862] stm32-mdma 58000000.dma-controller: STM32 MDMA driver registered
[    2.371370] phy phy-5a006000.usbphyc.0: supply vdda1v1 not found, using dummy regulator
[    2.371723] phy phy-5a006000.usbphyc.0: supply vdda1v8 not found, using dummy regulator
[    2.372260] phy phy-5a006000.usbphyc.1: supply vdda1v1 not found, using dummy regulator
[    2.372575] phy phy-5a006000.usbphyc.1: supply vdda1v8 not found, using dummy regulator
[    2.372700] stm32-usbphyc 5a006000.usbphyc: registered rev:1.0
[    2.374098] reg11: supplied by vdd
[    2.374678] vref: supplied by vdd
[    2.375290] reg18: supplied by vdd
[    2.375791] usb33: supplied by vdd_usb
[    2.377446] mmci-pl18x 58005000.mmc: Got CD GPIO
[    2.379119] mmci-pl18x 58005000.mmc: mmc0: PL180 manf 53 rev1 at 0x58005000 irq 58,0 (pio)
[    2.413940] ehci-platform 5800d000.usb: EHCI Host Controller
[    2.414007] ehci-platform 5800d000.usb: new USB bus registered, assigned bus number 1
[    2.416318] ehci-platform 5800d000.usb: irq 60, io mem 0x5800d000
[    2.430634] ehci-platform 5800d000.usb: USB 2.0 started, EHCI 1.00
[    2.431265] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[    2.431287] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.431302] usb usb1: Product: EHCI Host Controller
[    2.431315] usb usb1: Manufacturer: Linux 5.10.83-armv7-lpae-x58 ehci_hcd
[    2.431328] usb usb1: SerialNumber: 5800d000.usb
[    2.432620] hub 1-0:1.0: USB hub found
[    2.432721] hub 1-0:1.0: 2 ports detected
[    2.439996] i2c i2c-0: Added multiplexed i2c bus 2
[    2.443577] stm32-hash 54002000.hash: will run requests pump with realtime priority
[    2.446110] stm32-hash 54002000.hash: Init HASH done HW ver 23 DMA mode 1
[    2.455658] mmc0: new high speed SDXC card at address 59b4
[    2.456875] mmcblk0: mmc0:59b4 ED2S5 119 GiB
[    2.463137] [drm] Initialized stm 1.0.0 20170330 for 5a001000.display-controller on minor 1
[    2.470454]  mmcblk0: p1 p2 p3 p4
[    2.559252] Console: switching to colour frame buffer device 240x67
[    2.622175] stm32-display 5a001000.display-controller: [drm] fb0: stmdrmfb frame buffer device
[    2.654052] EXT4-fs (mmcblk0p4): INFO: recovery required on readonly filesystem
[    2.654077] EXT4-fs (mmcblk0p4): write access will be enabled during recovery
[    5.319010] EXT4-fs (mmcblk0p4): recovery complete
[    5.324769] EXT4-fs (mmcblk0p4): mounted filesystem with ordered data mode. Opts: (null)
[    5.324926] VFS: Mounted root (ext4 filesystem) readonly on device 179:4.
[    5.327575] devtmpfs: mounted
[    5.340727] Freeing unused kernel memory: 2048K
[    5.341329] Run /sbin/init as init process
[    5.341346]   with arguments:
[    5.341357]     /sbin/init
[    5.341367]   with environment:
[    5.341377]     HOME=/
[    5.341387]     TERM=linux
[    5.345058] Not activating Mandatory Access Control as /sbin/tomoyo-init does not exist.
[    5.868015] systemd[1]: System time before build time, advancing clock.
[    6.038900] systemd[1]: systemd 245.4-4ubuntu3 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=hybrid)
[    6.040024] systemd[1]: Detected architecture arm.
[    6.072615] systemd[1]: Set hostname to <arm>.
[    7.126856] systemd[1]: /lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly.
[    7.503779] systemd[1]: Created slice system-modprobe.slice.
[    7.507782] systemd[1]: Created slice system-serial\x2dgetty.slice.
[    7.511210] systemd[1]: Created slice User and Session Slice.
[    7.512099] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[    7.512729] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[    7.515203] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[    7.515674] systemd[1]: Reached target Local Encrypted Volumes.
[    7.516123] systemd[1]: Reached target Paths.
[    7.516318] systemd[1]: Reached target Remote File Systems.
[    7.516471] systemd[1]: Reached target Slices.
[    7.516713] systemd[1]: Reached target Swap.
[    7.518391] systemd[1]: Listening on Syslog Socket.
[    7.519947] systemd[1]: Listening on fsck to fsckd communication Socket.
[    7.520707] systemd[1]: Listening on initctl Compatibility Named Pipe.
[    7.523121] systemd[1]: Listening on Journal Audit Socket.
[    7.524317] systemd[1]: Listening on Journal Socket (/dev/log).
[    7.525809] systemd[1]: Listening on Journal Socket.
[    7.527659] systemd[1]: Listening on udev Control Socket.
[    7.528601] systemd[1]: Listening on udev Kernel Socket.
[    7.541173] systemd[1]: Mounting Huge Pages File System...
[    7.554243] systemd[1]: Mounting POSIX Message Queue File System...
[    7.572007] systemd[1]: Mounting Kernel Debug File System...
[    7.603999] systemd[1]: Mounting Kernel Trace File System...
[    7.650325] systemd[1]: Starting Journal Service...
[    7.697752] systemd[1]: Starting Set the console keyboard layout...
[    7.712590] systemd[1]: Starting Create list of static device nodes for the current kernel...
[    7.713198] systemd[1]: Condition check resulted in Load Kernel Module drm being skipped.
[    7.727276] systemd[1]: Condition check resulted in Set Up Additional Binary Formats being skipped.
[    7.756308] systemd[1]: Starting File System Check on Root Device...
[    7.808489] systemd[1]: Starting Load Kernel Modules...
[    7.864772] systemd[1]: Starting udev Coldplug all Devices...
[    7.922299] systemd[1]: Mounted Huge Pages File System.
[    7.956476] systemd[1]: Mounted POSIX Message Queue File System.
[    7.966794] systemd[1]: Mounted Kernel Debug File System.
[    7.969036] systemd[1]: Mounted Kernel Trace File System.
[    8.026936] systemd[1]: Finished Create list of static device nodes for the current kernel.
[    8.062974] systemd[1]: Started File System Check Daemon to report status.
[    8.085177] systemd[1]: Finished Load Kernel Modules.
[    8.115022] systemd[1]: Mounting FUSE Control File System...
[    8.169060] systemd[1]: Mounting Kernel Configuration File System...
[    8.212176] systemd[1]: Starting Apply Kernel Variables...
[    8.231864] systemd[1]: Finished File System Check on Root Device.
[    8.312066] systemd[1]: Starting Remount Root and Kernel File Systems...
[    8.374074] systemd[1]: Mounted FUSE Control File System.
[    8.404770] systemd[1]: Mounted Kernel Configuration File System.
[    8.423381] systemd[1]: Finished Apply Kernel Variables.
[    8.627148] EXT4-fs (mmcblk0p4): re-mounted. Opts: errors=remount-ro
[    8.662924] systemd[1]: Finished Remount Root and Kernel File Systems.
[    8.671800] systemd[1]: Condition check resulted in Rebuild Hardware Database being skipped.
[    8.672218] systemd[1]: Condition check resulted in Platform Persistent Storage Archival being skipped.
[    8.716664] systemd[1]: Starting Load/Save Random Seed...
[    8.755989] systemd[1]: Starting Create System Users...
[    9.101068] systemd[1]: Finished Load/Save Random Seed.
[    9.142989] systemd[1]: Finished Create System Users.
[    9.180299] systemd[1]: Starting Create Static Device Nodes in /dev...
[    9.239139] systemd[1]: Finished Set the console keyboard layout.
[    9.328227] systemd[1]: Finished Create Static Device Nodes in /dev.
[    9.329936] systemd[1]: Reached target Local File Systems (Pre).
[    9.330169] systemd[1]: Reached target Local File Systems.
[    9.356708] systemd[1]: Starting Set console font and keymap...
[    9.357101] systemd[1]: Condition check resulted in Store a System Token in an EFI Variable being skipped.
[    9.357710] systemd[1]: Condition check resulted in Commit a transient machine-id on disk being skipped.
[    9.371190] systemd[1]: Starting udev Kernel Device Manager...
[    9.419752] systemd[1]: Started Journal Service.
[    9.645062] systemd-journald[165]: Received client request to flush runtime journal.
[    9.650472] systemd-journald[165]: File /var/log/journal/13ea39df040d44858ea5fb986d75482a/system.journal corrupted or uncleanly shut down, renaming and replacing.
[   13.091234] systemd-journald[165]: Failed to read journal file /var/log/journal/13ea39df040d44858ea5fb986d75482a/user-1000.journal for rotation, trying to move it out of the way: Text file busy
[   19.173328] stm32-rproc 10000000.m4: wdg irq registered
[   19.173854] stm32-rproc 10000000.m4: m4 state not supported
[   19.193488] remoteproc remoteproc0: m4 is available
[   20.088522] dwc2 49000000.usb-otg: supply vusb_d not found, using dummy regulator
[   20.088942] dwc2 49000000.usb-otg: supply vusb_a not found, using dummy regulator
[   20.173825] dwc2 49000000.usb-otg: dwc2_core_reset: HANG! Soft Reset timeout GRSTCTL_CSFTRST
[   20.200257] dwc2: probe of 49000000.usb-otg failed with error -16
[   20.342911] st,stm32-i2s 4000b000.audio-controller: No cache defaults, reading back from HW
[   21.084229] input: pmic_onkey as /devices/platform/soc/5c002000.i2c/i2c-1/1-0033/5c002000.i2c:stpmic@33:onkey/input/input0
[   33.770714] vref: disabling
[   33.770765] vdda: disabling
[  410.138725] stm32-dwmac 5800a000.ethernet eth0: PHY [stmmac-0:00] driver [RTL8211F Gigabit Ethernet] (irq=POLL)
[  410.140871] dwmac4: Master AXI performs any burst length
[  410.140914] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found
[  410.346689] stm32-dwmac 5800a000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported
[  410.347310] stm32-dwmac 5800a000.ethernet eth0: registered PTP clock
[  410.349573] stm32-dwmac 5800a000.ethernet eth0: configuring for phy/rgmii-id link mode
[  414.478620] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[  414.478694] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

参考

Debian: Getting Started with the STM32MP157 - eewiki / Linux Guides - Engineering and Component Solution Forum - TechForum │ Digi-Key (digikey.com)
[linux - Is it possible to access to the framebuffer in order to put a pixel on the screen from the command line? - Unix & Linux Stack Exchange

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